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Dry density of soil by compaction test

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Using results of compaction tests, dry density of soil can be obtained as below:

Typical results of compaction tests include:
¨ç weight of mould and wet test material : Wt(g)
¨è weight of mould : Wm(g)
¨é water content of test material : w(£¥)
¨ê volume of mould  : V(§¨)

Weight of soil Ws is:
Ws = (Wt-Wm) / (1+w/100)

Then the dry density of soil, rd, is :
rd = Ws / V = (Wt-Wm)/((1+w/100)*V)


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rd = ( Wt - Wm ) / ( ( 1 + w / 100 ) * V )
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